Question

If a and b are roots of equation x2 + x-7 = 0 then find a3 + b3​

Answer 1

y =(2x+1)^5

Diff w.r.t x

y' =5(2x+1)^4 D(2x+1)

= 5(2x+1)^4 (2)

=10(2x+1)^4